This “people detector” with pyroelectric sensor was found in the April 1991 issue of Radio Electronics magazine. The circuit is based on an LM324 and a sensor from that time.
This circuit, suggested by Philips Components (1980), uses a fast voltage comparator and requires...
This 2002 documentation circuit is suitable for automotive use. The circuit is based on an...
We present a DC-DC converter circuit that can operate with input voltages from 2.4 V to 14 V and...